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標題: 我的單片機24s計時器 [打印本頁]

作者: jkui 時間: 2018-10-27 10:57
標題: 我的單片機24s計時器
#define uchar unsigned char
#define uint unsigned int
#include <REGX51.H>
#include <intrins.h>
sbit BEEP=P0^0;
sbit LED=P1^1;
sbit CLEAR=P1^2;
sbit START=P1^3;
#define uchar unsigned char
#define uint unsigned int
void delay(unsigned int i )
{
while(i--);
}
void main()
{
uint T_Count = 0;
uchar count;

LED=1;
BEEP=1;

CLEAR =1;
START =1;

TMOD=0X01;
TH0=(65535-50000)/256;
TL0=(65535-50000)/256;

while(START);
TR0=1;
count=48;
while(1)
{
   if(TF0==1)
   TF0=0;
   TH0=(65535-50000)/256;
   TL0=(65535-50000)/256;
   if(++T_Count==10)
   {
   T_Count=0 ;
   LED=LED;

   count--;
   if(count=0)
   {
   while(CLEAR)
   {
      BEEP=1;
delay(200);
BEEP=0;
delay(200);
}
BEEP=1;
while(START);
count=48;
}
}
}
}

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